Region of the frontal lobes involved in the cognitive processing of decision making. damage leads to disinhibited behavior.

Prefrontal?

The anterior of the frontal lobes of the brain, lying in front of the motor and premotor areas. This brain region has been implicated in planning complex cognitive behaviors, personality expression, decision making and moderating correct social behavior. executive function

Premotor/supplementary motor?

The SMA is implicated in the planning of motor actions and bimanual control. In contrast to the premotor cortex, the SMA has been implicated in actions that are under internal control, such as the performance of a sequence of movements from memory (as opposed to movements guided by a visual cue).[3]